Low-gloss blends containing poly(meth)acrylate rubber-based graft copolymer and process for making thereof
US6476128B1 · kind B1 · utility
6Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L55/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for controlling the surface gloss of a molded composition of: (a) a polyvinyl chloride resin and (b) a graft copolymer comprising a discontinuous poly(alkyl(meth)acrylate) rubber phase and a rigid thermoplastic phase, wherein at least a portion of rigid thermoplastic phase is chemically grafted to the poly(alkyl(meth)acrylate) rubber phase, by regulating the cross-link density and thus the swell index of the rubber phase in the graft copolymer to at least about 8 to vary the surface gloss after extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.